McDonald's chef says he's looking into bringing back Szechuan McNugget sauce after a cartoon called for its return

A McDonald's chef says he's looking into bringing back a cult classic McNuggets sauce after a cartoon demanded its return.

On Saturday, Adult Swim aired the first new episode of "Rick and Morty" since 2015 as an April Fools' Day treat for loyal fans.

The episode ended with a plea from mad scientist Rick for McDonald's to bring back its Szechuan McNugget sauce, a plum sauce that was available for a limited time in 1998 to promote the Disney movie "Mulan."

After the episode, it became clear that "Rick and Morty" fans and writers were just as determined as Rick to bring back the sauce — and that McDonald's might be open to their demands. A Change.org petition calling for the return of the sauce received more than 13,500 signatures by Monday morning.